<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<script src="../js/vue.js"></script>
		<title></title>
	</head>
	<body>
		<div id="app">
			<h1>
				当前计数：{{counter}}
			</h1>
			<!-- <button v-on:click="counter++">+</button>
			<button v-on:click="counter--">-</button> -->
			<button v-on:click="add()">+</button>
			<button v-on:click="sub()">-</button>
		</div>
	</body>
	
	<script>
		const app=new Vue({
			el:"#app",
			data:{
				counter:0
			},
			methods:{
				add:function(){
					this.counter++;
					console.log("add被执行");
				},
				sub:function(){
					this.counter--;
					console.log("sub被执行");
				}
			}
			
		});
	</script>
</html>
